<template>
    <div class="list" ref="wrapper">
      <div>
        <div class="area">
          <div class="title border-bottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{this.$store.state.city}}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
          <div class="button-list">
            <div class="button-wrapper" v-for="item of hot"
                 :key="item.id" @click="handleCityClick(item.name)">
              <div class="button"> {{item.name}}</div>
            </div>
          </div>
        </div>
        <div class="area"
             v-for="(item,key) of cities"
             :key="key"
             :ref="key">
          <div class="title border-topbottom">{{key}}</div>
          <div class="item-list">
            <div class="item border-bottom"
                 v-for="inneritem of item" :key="inneritem.id"
                 @click="handleCityClick(inneritem.name)">
              {{inneritem.name}}</div>
            </div>
        </div>
      </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('changCity', city)
      this.$router.push('/')
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import "~styles/varibles.styl"
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc
  .border-bottom
    &:before
      border-color #ccc
  .list
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    .title
      line-height .54rem
      background #eee
      padding-left .2rem
      color #666
      font-size .26rem
    .button-list
      overflow hidden
      padding 0.1rem .6rem .1rem .1rem
      .button-wrapper
        float left
        width 33.33%
        .button
          margin 0.1rem
          padding .1rem 0
          text-align center
          border: 0.02rem solid
          border-radius .1rem
    .item-list
      .item
        line-height .66rem
        padding-left .19rem
</style>
